The 56-year-old actress, who is best known for playing Princess Leia in the original “Star Wars” trilogy, was briefly hospitalized after suffering a bipolar episode on a cruise ship earlier this month.

Fisher, who has been candid about her struggle with mental illness (as well as alcoholism and drug addiction), was the secret celebrity guest aboard a cruise catering to gay and lesbian vacationers on the Holland America Eurodam. While it was smooth sailing at first, the star had some trouble while delivering a singing performance for vacationers and later received medical treatment for her bipolar disorder.

In a video that hit YouTube, Fisher is seen struggling with the lyrics to the songs, including her ex-husband Paul Simon’s “Bridge Over Troubled Water.” Additionally, she has a dog on stage with her that relieved itself. Fisher is then seen scooping up after the dog – and putting the cloth which was used to clean it behind a pillow on a couch behind her.

“There was a medical incident related to Carrie Fisher’s bipolar disorder,” her spokesperson said in a statement to omg!. “She went the hospital briefly to adjust her medication and is feeling much better now.”

Fisher, who was born famous as the daughter of iconic Hollywood stars Eddie Fisher and Debbie Reynolds, has spoken many times over the years about being bipolar.

“I used to think I was a drug addict, pure and simple – just someone who could not stop taking drugs willfully,” she told Diane Sawyer on “PrimeTime” in 2000. “And I was that. But it turns out that I am severely manic depressive.”

Noting that in “in its most extreme state” her “chemical imbalance” will “lead me to a mental hospital,” she went on to describe “the world of manic depression” as “a world of bad judgment calls. Just every kind of bad judgment because it all seems like a good idea at the time.

“I have two moods,” she continued. “One is Roy, rollicking Roy, the wild ride of a mood. And Pam, sediment Pam, who stands on the shore and sobs … Sometimes the tide is in, sometimes it’s out.”

Despite how it’s impacted her life – and still continues to do so – Fisher said she maintained a good attitude about it.

“I am mentally ill. I can say that,” she told Sawyer. “I am not ashamed of that. I survived that, I’m still surviving it, but bring it on. Better me than you.”